Dovecot 2.1.2,POP3/IMAP 邮件服务器

发布于 2012年03月16日
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Dovecot 是一个开源的 IMAP 和 POP3 邮件服务器,支持 Linux/Unix 系统。

POP / IMAP 是 MUA 从邮件服务器中读取邮件时使用的协议。其中,与 POP3 是从邮件服务器中下载邮件比起来,IMAP4 则是将邮件留在服务器端直接对邮件进行管理、操作。而Dovecot 是一个比较新的软件,由 Timo Sirainen 开发,最初发布于 2002年7月。作者将安全性考虑在第一,所以 Dovecot 在安全性方面比较出众。另外,Dovecot 支持多种认证方式,所以在功能方面也比较符合一般的应用。

2012-03-15发布2.1.2  上一个版本是2012年02月23日的2.1.1.修正了一些bug.

	+ Initial implementation of dsync-based replication. For now this
	  should be used only on non-critical systems.
	+ Proxying: POP3 now supports sending remote IP+port from proxy to
	  backend server via Dovecot-specific XCLIENT extension.
	+ Proxying: proxy_maybe=yes with host=<hostname> (instead of IP)
	  works now properly.
	+ Proxying: Added auth_proxy_self setting
	+ Proxying: Added proxy_always extra field (see wiki docs)
	+ Added director_username_hash setting to specify what part of the
	  username is hashed. This can be used to implement per-domain
	  backends (which allows safely accessing shared mailboxes within
	+ Added a "session ID" string for imap/pop3 connections, available
	  in %{session} variable. The session ID passes through Dovecot
	  IMAP/POP3 proxying to backend server. The same session ID is can be
	  reused after a long time (currently a bit under 9 years). 
	+ passdb checkpassword: Support "credentials lookups" (for
	  non-plaintext auth and for lmtp_proxy lookups)
	+ fts: Added fts_index_timeout setting to abort search if indexing
	  hasn't finished by then (default is to wait forever). 
	- doveadm sync: If mailbox was expunged empty, messages may have
	  become back instead of also being expunged in the other side.
	- director: If user logged into two directors while near user
	  expiration, the directors might have redirected the user to two
	  different backends.
	- imap_id_* settings were ignored before login.
	- Several fixes to mailbox_list_index=yes
	- Previous v2.1.x didn't log all messages at shutdown.
	- mbox: Fixed accessing Dovecot v1.x mbox index files without errors.


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本文标题:Dovecot 2.1.2,POP3/IMAP 邮件服务器